Horseshoe



(No Model.) I

C. HAMMELMANN.

HORSBSHOE.

No. 472,262. v Patented Apr. 5, 1892.

off 6 A /fv y A 'joy' 7' l V////////7//////2 l? UNITED STATES CHARLESHAMMELMANN, OF BUFFALO, NEW YORK.

HORSESHOE.

SPECIFICATION forming part of Letters latent N o. 472,262, dated April5, 1892.

To all whom, t may concern:

Be it kn own that l, CHARLES HAMMELMANN, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented new and useful Improvements in Horseshoes, of which thefollowing is a specification.

This invention relates to horseshoes which are provided with removablecalks; and it has for its object to fasten the calk in its seat in theshoe in a convenient and reliable manner and to so construct theinterlocked parts that the impact of the calk against the pavement tendsto tighten the calk and lock it in place. Y

In the accompanying drawings, Figure l is a perspective view of myimproved horseshoe. Fig. 2 is a similar View of the toe-calk. Fig. 3 isa bottom plan view of the front portion of the shoe with the toe-calkremoved. Fig. 4 is a cross-section of the shoe through the toe-calk.Fig. 5 is a longitudinal section thereof in line a' a1, Fig. 4. Fig. 6is a horizontal section in line y y, Fig. 4. Fig. 7 is a perspectiveview of one of the heel-calks. Fig. 8 is a horizontal section of thehorseshoe through one of the heel-calks. Fig. 9 is a verticallongitudinal section through o'ne of the heel-calks. Fig. l0 is across-section in line a z, Fig. S.

Like letters of reference refer to like parts in the several figures.

A represents the body of the horseshoe, which is constructed in theordinary form and provided with the usual nail-holes for securing theshoe to the hoof.

B is a transverse lug arranged at the front end of the shoe on the underside thereof and having a slot or groove c formed lengthwise therein.The bottom or horizontal wall of this groove slopes or inclines from thefront toward the rear end thereof, as shown in Fig. 5, and the groovetapers from its front end toward its rear end, as shown in Fig. 6.

D is the removable toe-calk, which is arranged inthe slot or groove cand tapered lengthwise to iit the groove. The upper or inner edge of thecalk is inclined to correspend to the slope of the inclined bottom ofthe groove, as shown at d, while its outer sharp edge is made straightin the ordinary manner. By thus inclining the contiguous Applicationfiled September 28, 1891. Serial No. 406,995. (No model.)

faces of the shoe and calk the blow or impact of the calk tends to drivethe same into the groove, forcing it rmly against the converging sidesof the groove and wedging it more tightly into the same the greatertheimpact of the shoe against the pavement. The groove c and the calk arepreferably constructed of dovetail cross-section to confine the calkagainst outward or downward withdrawal, and in order to still furtherwedge the calk into its seat the-calk is provided at its rear portionwith a shoulder, lug, or raised face e, which rides upon an incline f,arranged on the body of the horseshoe at the rear end of the groove,when the calk has been almost fully driven into its groove, therebyforcing the calk outward and downward in its groove and causing itsdovetail sides to firmly wedge against the outwardly-tapering walls ofthe dovetail groove. The calk is thus wedged into its seat bothlengthwise and transversely between the tapering and dovetail walls ofthe groove, forming a double lock, whereby the calk is securely held inplace. It is obvious that the inclined face f could be arranged on theshoulder e and the contiguous face of tho body be made straight insteadof forming the incline on the body and the straight face on theshoulder.

To render the lock still more reliablel a setscrew g is preferablyemployed, which is arranged in a horizontal opening in the front portionof the body. The inner end of the set-screw enters a recess ordepression 'formed in the adjacent side of the calk and having aninclined or receding bearing-face h for the end of the set-screw, asshown in Figs. 2 and 6. This bearing-face is inclined at the properangle to remain in contact with the end of the set-screw atall times,whether the calk is driven into the groove to a greater or less extent,so as to prevent loosening of the screw so far as practicable. Thesloping bottom of the groove c does not extend to the rear end thereof,but terminates at a short distance from its rear end, so that a portionof the body extends into the groove, as shown in Fig. 3, whereby thereduced thickness of the metal near the deep part of the groove iscompensated for and weakening of the shoe at this point is avoided. Theremovable heel-calks are secured to the horseshoe in the same way IOO asthe toe-calk, the only structural difference being that the set-screwsof the heel-calks are arranged obliquely to the calks and engage inthreaded openings formed in bosses I, a1- ranged on the inner sides ofthe shoe, as shown in Fig. S.

In my improved shoe the calks are locked in their seats by the impact orblows of the calks against the pavement, whereby such blows, instead ofloosening the calks, have a tendency to Wedge the calks tighter intotheir.

A very simple seats the heavier the blows. and compact fasteningis thusobtained, which does not depend for its security upon screws or otherseparate fastenings which are liable to become loose or lost.

I claim as my invention* l. The combination, with the body of ahorseshoe provided with a tapering groove having an inclined and slopingbottom, of a tapering calk arranged in said groove and having aninclined edge which bears against the inclined bottom of the groove,substantially as set forth.

2. The combination, with the body of a horseshoe provided with atapering dovetail groove having an inclined botton1,of a taperingdovetail call; arranged in said groove and having an inclined edgebearing against the inclined bottom of said groove, substantially as setforth.

3. The combination, with the body of a horseshoe provided with a groovehaving an inclined or sloping bottom, of acalk arranged in said grooveand having an inclined edge which bears against the inclined bottom ofthe groove, and a set-screw bearing against the calk, substantially asset forth.

4. The combination, with the body of a horseshoe provided with atapering groove having an inclined or sloping bottom, of a tapering calkarranged in said groove and having an inclined edge which bears againstthe inclined bottom of the groove and in its side a recess having aninclined bearing-face, and a set-screw bearing against the inclined faceof the recess, substantially as set forth. n

5. The combination, with the body of the horseshoe having a grooveprovided with a sloping bottom and near the front end of said groovewith an incline, of a calk having a sloping edge bearing against thecorresponding bottom of the groove and at its front end a raised face orshoulder bearing against the incline of the body, substantially as setforth.

lVitncss my hand this 24th day of September, 1891.

CHARLES HAMMELMANN.

lVitnesses:

CARL F. Geven, ALICE G. CONNELLY.

